Hand pump



FIG. 1 is a perspective view of a hand pump showing my new design;

FIG. 2 is a side elevational view thereof, the opposite side elevational view being a mirror image of the illustrated side elevational view;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a back elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a hand pump, as shown and described. 